is 2 185677 - 1
has 55895 decimal digits
takes 0.001 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actualunknown10000000020000000001.360749.4361%1.360749.4361%49.4361%
PrimeNet2400.000055.0000%2000450000.000012.0881%0.000060.4396%5.4396%
GPU722440.000059.0909%3400700000.00008.4206%0.000162.5357%3.4448%
Difference-440.0000-59.0909%+99996600+1999930000+1.3607+41.0156%+1.3607-13.0995%-13.0995%

Known prime factors (3 factors, 195.3 bits, 0.10520872% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1856771114063720.0873
3
-137.528e-137.415e-91.361e-8
1856778943403535158520396764792479.5652408322930454100507
2408322930454100507
2014-06-19124083229304541005071,077,144877,298,5251.639e+9
185677641675583254948279592086565432995.696172793502494910053370123
3 × 337474283 × 170673254426827
2020-05-233374742831706732544268275.447e+1062,175116,121

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1856779963514972589306708780972241773099.653
1856777148670253077574452071987353426420935115.783
18567757387636797072099179978877868506789706174753946552
097
53175.261
18567763933442813056534028744808614822279660430164905957
668840111
59195.348
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2017-05-26T18:28:59kkmrkkblmbrbkManual testing100000000200000000012-
skipped known factor: 1114063
--1.361--41.910%


Trial Factoring results:
No TF results for M185677


ECM factoring results:

Old Calculation Method

Total ECM effort:12.957 GHz-days
Estimated T-Level:28.680
DigitsB1CurvesCompleteFacMiss
2011000752 / 1007.5200.052%
2550000752 / 2802.6866.785%
30250000471 / 6400.73647.878%

New Calculation Method

Total ECM effort:12.957 GHz-days
Estimated T-Level:28.680
DigitsB1CompleteFacMiss
201100048.3150.000%
25500006.5200.147%
302500000.66651.374%
3510000000.05494.787%
4030000000.00499.649%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002811.369
2500002500000041810.18
25000025000000250.609
2500003600000070.195
25000038500000210.602


Lucas-Lehmer results:
No L-L results for M185677


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T01:07:37Oliver KruseOllaptop
1114063
894340353515852039676479
931150118F0322__no
2017-09-22T10:05:22Oliver KruseManual testing
1114063
894340353515852039676479
931150118F0322__no
2017-10-12T03:55:07kkmrkkblmbrbkc4.xlarge931150118F0322__no
2020-04-17T18:55:39Oliver KruseAddPrpType5
1114063
894340353515852039676479
43251C86E21A0B__no
2020-05-23T09:32:38CrypticCluecruncher
1114063
894340353515852039676479
64167558325494827959208656543
43251C86E21A0B9Fno


P-1 factor-bounds graph:
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 100000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-05-19T22:38:07+00:00